► a) Must be restored by negative feedback mechanisms► b) Is considered the cause of most diseases► c) Is when the internal conditions of the body become more stable► d) Only occur when positive feedback mechanisms are overwhelmed

► a) Measuring the length of the femur on a fetus using ultrasound► b) Locating an injury to a tendon in the shoulder using CT imaging► c) Describing the process of how a toxin interferes with nerve impulse conduction► d) Identifying the types of cells found in a biopsy sample of lung tissue